Senior Frontend Engineer

Key Responsibilities

• Design and build customer-facing experiences using React, React Native, and TypeScript
• Develop trading interfaces, live positions, settlement views, wallet and payout flows, identity and verification journeys, and promotions
• Build real-time interfaces using live data feeds and WebSockets that remain reliable under live market conditions
• Develop and contribute to the shared web and React Native design system
• Ensure consistent experiences across web and mobile, including design tokens, touch targets, and live-ticking numerals in fixed-width slots
• Work across internal and partner-maintained frontend codebases and review partner work to a high standard
• Maintain strong frontend architecture and appropriate boundaries between ROLR and external platform providers
• Build and improve internal back-office tools and operational dashboards
• Monitor and improve frontend performance, including Core Web Vitals on web and cold start and frame time on native
• Support code reviews, architecture discussions, and mentoring across the engineering team

Preferred Experience

• React Native in production, strongly preferred given our flagship mobile product
• Design systems, tokens, theming, and component libraries
• Keycloak or comparable identity platforms, passkeys / WebAuthn, and biometric unlock
• Real-time market data or trading interfaces
• Fintech, trading, prediction markets, or another regulated industry
• Internal/admin tooling frameworks and frontend observability, such as Sentry or Datadog RUM
• AI-native engineering workflows, including agentic coding and AI-assisted testing and review

What We Offer

• Base salary range: $180,000–$240,000 per year
• Competitive health and welfare benefits
• 401(k) retirement plan with company match
• Flexible vacation policy
• Home office setup reimbursement
• Access to mental health support